1,244 research outputs found

    Letter from Francis W. Halsey to [John Muir], 1902 Jan 4.

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    The New York TimesOFFICE OF THE EDITOR OFTHE SATURDAY REVIEW OF BOOKS.New York, Jany 4 1902Dear Sir:We beg this day to send you in another wrapper a marked copy of the latest issue of The New York Times Saturday Review of Books, in which will be found something not altogether uninteresting to you.And may we add that, if at any time, you should desire to have any items of general interest to the public printed in THE NEW YORK TIMES SATURDAY REVIEW OF BOOKS concerning your work, or your interest in literary matters, they would be received with pleasure.Yours faithfully,THE NEW YORK TIMES.[illegible]EDITOR SATURDAY REVIEW OF BOOKS.0292

    Invertebrate Fauna and Environment of Deposition of the Niobrara Formation (Cretaceous) of Kansas

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    This paper reevaluates, and where desirable, synonymizes species. Previously unrecorded species are described and illustrated. The environment of the Niobrara Formation in Kansas is described. The author collected specimens in Scott, Logan, Gove, Trego, Rooks and Phillips Counties, Kansas.https://scholars.fhsu.edu/fort_hays_studies_series/1061/thumbnail.jp

    The Secondary School Assistant Principal

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    School leadership research typically centers around the high profile roles of the site level principal and the district superintendent. The resulting scarcity of information in regard to the role of the assistant principal is contributing to ineffective training, fewer initial guidelines and an overall lack of clear conceptualization of the position. The purpose of this study was to construct a realistic portrayal of the assistant principal\u27s daily professional life in the educational arena. This qualitative, ethnographic study stressed depth, richness and accuracy to depict the singular and collective voices of the participants. Eight practicing Junior and Senior High School assistant principals in San Diego County were interviewed individually as well as collectively in focus group interviews. In addition they completed a survey and were asked to complete two one-day logs documenting their activities and interactions. Findings of the study showed that the world of the practicing assistant principal is in constant motion and filled with an amazing range of potentially volatile, thought provoking human interactions. There is a technical side where each decision is required to be made with skill, immediacy and a certain permanency. The role is unpredictable and while many assistant principals strive to accomplish leadership, the sheer number of disciplinary interactions and daily interruptions often supersede their attempts at impacting change. The greatest challenges for practicing assistant principals include: accepting the continual lack of closure or time, accumulating the diverse knowledge-base needed to be responsive to the endless array of problem solving situations they encounter, and acknowledging the public, political nature of their role. They strive to meet these challenges by building cohesive teams, sharing humor, celebrating successes, and readjusting their expectations of themselves and others. Suggestions for improved training programs and inservices specific to the role were abundant and were felt to be vital to the success and safety of assistant principals. Immediate needs include: a reduction in hours, (they averaged 12 hour days), assistance with continual supervision, and greater autonomy and learning opportunities. A primary frustration with the role was the inability to structure their time to engage in systematically planned leadership activities. The fact that leadership occurs at all is due to purposeful time utilization, will power and a high level of commitment to the betterment of the human condition. Analysis of the role offered an enlightened view of the role of the secondary school assistant principal in the tumultuous educational system called school

    Exact Multifractal Spectra for Arbitrary Laplacian Random Walks

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    Iterated conformal mappings are used to obtain exact multifractal spectra of the harmonic measure for arbitrary Laplacian random walks in two dimensions. Separate spectra are found to describe scaling of the growth measure in time, of the measure near the growth tip, and of the measure away from the growth tip. The spectra away from the tip coincide with those of conformally invariant equilibrium systems with arbitrary central charge c1c\leq 1, with cc related to the particular walk chosen, while the scaling in time and near the tip cannot be obtained from the equilibrium properties.Comment: 4 pages, 3 figures; references added, minor correction

    Drug interactions may be important risk factors for methotrexate neurotoxicity, particularly in pediatric leukemia patients

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    Purpose: Methotrexate administration is associated with frequent adverse neurological events during treatment for childhood acute lymphoblastic leukemia. Here, we present evidence to support the role of common drug interactions and low vitamin B12 levels in potentiating methotrexate neurotoxicity. Methods: We review the published evidence and highlight key potential drug interactions as well as present clinical evidence of severe methotrexate neurotoxicity in conjunction with nitrous oxide anesthesia and measurements of vitamin B12 levels among pediatric leukemia patients during therapy. Results: We describe a very plausible mechanism for methotrexate neurotoxicity in pediatric leukemia patients involving reduction in methionine and consequential disruption of myelin production. We provide evidence that a number of commonly prescribed drugs in pediatric leukemia management interact with the same folate biosynthetic pathways and/or reduce functional vitamin B12 levels and hence are likely to increase the toxicity of methotrexate in these patients. We also present a brief case study supporting out hypothesis that nitrous oxide contributes to methotrexate neurotoxicity and a nutritional study, showing that patients. Conclusions: Use of nitrous oxide in pediatric leukemia patients at the same time as methotrexate use should be avoided especially as many suitable alternative anesthetic agents exist. Clinicians should consider monitoring levels of vitamin B12 in patients suspected of having methotrexate- induced neurotoxic effects

    Analysis for biotechnology innovations using Strategic Environmental Assessment (SEA):

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    " Meeting the food needs of the world's growing population while reducing poverty and protecting the environment is a major global challenge. Genetically modified crops appear to provide a promising option to deal with this challenge. However there is a need to make strategic decisions on how to spend limited agricultural research funds in order to achieve a maximum impact with regard to finding sustainable solutions to end hunger and poverty. In international development institutions, there is growing interest in the potential use of Strategic Environmental Assessment (SEA) as part of a research based Environmental Management System (EMS) to promote mainstreaming of environmental considerations in policy development. SEA was developed as an approach to integrate environmental considerations at a policy level, where alternatives environmental policies can be evaluated. In this paper, we propose using SEA in a policy research and priority setting process regarding new technologies, taking the development of Genetically Modified Organisms (GMOs) as an example. We propose that this method would be a useful tool for the international agricultural research centers of the Consultative Group for International Agricultural Research (CGIAR), streamlining business processes, strengthening accountability, sharpening the research agenda it supports, fostering broader partnerships, and increasing the relevance and impact of CGIAR research in achieving international development goals. Currently international law requires only Environmental Impact Assessments (EIAs) of specific biotechnology projects. The incorporation of environmental considerations only at the level of specific projects precludes the adoption of alternative environmental policies. In this review, we outline an SEA approach currently being considered at the International Food Policy Research Institute (IFPRI) for use in evaluating biotechnology policies. SEA may be a useful tool to inform the evaluation of biotechnology policies and priorities by taking account of information on the economic, social, and environmental benefits, cost and risks of adopting those policies." Authors' AbstractRisk, Strategic Environmental Assessment, Genetically modified organisms, Living modified organisms,

    Strategic environmental assessment: assessing the environmental impact of biotechnology

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    Poverty reduction, Agricultural research, Environmental protection, Genetically modified organisms, Crops, Agricultural biotechnology Research, Investments, Strategic Environmental Assessment,
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